{
 "ocl_version": "0.1.0",
 "name": "Route de Sur le Mont",
 "slug": "route-de-sur-le-mont",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 30.64423953185269,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1274.0,
   "end_distance_m": 1276.0,
   "start_elevation_m": 876.3927190097373,
   "end_elevation_m": 877.0056038003744,
   "min_gradient_pct": -11.509690256031035,
   "suppressed_max_gradient_pct": 46.42932973218876,
   "suppressed_location_m": [
    354.0,
    356.0
   ]
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 27.431424930595465,
   "diagnostic": true,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1273.0,
   "end_distance_m": 1276.0,
   "start_elevation_m": 876.1826610524565,
   "end_elevation_m": 877.0056038003744,
   "min_gradient_pct": -6.955162828451951,
   "suppressed_max_gradient_pct": 41.48674032629742,
   "suppressed_location_m": [
    354.0,
    357.0
   ]
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.65616390991636,
   "diagnostic": false,
   "flags": [
    "texture_excluded",
    "canopy_or_structure"
   ],
   "start_distance_m": 1271.0,
   "end_distance_m": 1276.0,
   "start_elevation_m": 875.7227956048786,
   "end_elevation_m": 877.0056038003744,
   "min_gradient_pct": -4.702267945153835,
   "suppressed_max_gradient_pct": 29.694734271397465,
   "suppressed_location_m": [
    354.0,
    359.0
   ]
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.51689932744557,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1251.0,
   "end_distance_m": 1261.0,
   "start_elevation_m": 871.0611527933768,
   "end_elevation_m": 873.5128427261213,
   "min_gradient_pct": -2.5872119871860377
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.699217444869305,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1256.0,
   "end_distance_m": 1276.0,
   "start_elevation_m": 872.2657603114005,
   "end_elevation_m": 877.0056038003744,
   "min_gradient_pct": -0.45899072242605143
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.77780402799044,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1251.0,
   "end_distance_m": 1276.0,
   "start_elevation_m": 871.0611527933768,
   "end_elevation_m": 877.0056038003744,
   "min_gradient_pct": 0.08933745444983288
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.55218106743837,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1226.0,
   "end_distance_m": 1276.0,
   "start_elevation_m": 866.2295132666552,
   "end_elevation_m": 877.0056038003744,
   "min_gradient_pct": 1.9787136652353183
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.638620290786548,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 1214.0,
   "end_distance_m": 1314.0,
   "start_elevation_m": 864.2020585740133,
   "end_elevation_m": 883.8406788647999,
   "min_gradient_pct": 6.675254957738616
  }
 ],
 "shape": {
  "ascent_concentration": 0.375,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 498.0,
  "shape_class": "sustained"
 },
 "length_m": 1506.951883793764,
 "start_elevation_m": 722.4788149443143,
 "end_elevation_m": 901.7415039023493,
 "endpoint_gain_m": 179.26268895803503,
 "overall_gradient_pct": 11.895714182110428,
 "accumulated_ascent_m": 180.01923842146982,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.65616390991636,
   "start_distance_m": 1271.0,
   "end_distance_m": 1276.0,
   "midpoint_distance_m": 1273.5,
   "start_elevation_m": 875.7227956048786,
   "end_elevation_m": 877.0056038003744,
   "start_xy": [
    971346.9638938275,
    6563989.501919704
   ],
   "end_xy": [
    971342.1781946978,
    6563990.950050858
   ]
  },
  "max_10m": {
   "gradient_pct": 24.51689932744557,
   "start_distance_m": 1251.0,
   "end_distance_m": 1261.0,
   "midpoint_distance_m": 1256.0,
   "start_elevation_m": 871.0611527933768,
   "end_elevation_m": 873.5128427261213,
   "start_xy": [
    971365.8253620383,
    6563982.918850858
   ],
   "end_xy": [
    971356.5352920871,
    6563986.605657396
   ]
  },
  "max_20m": {
   "gradient_pct": 23.699217444869305,
   "start_distance_m": 1256.0,
   "end_distance_m": 1276.0,
   "midpoint_distance_m": 1266.0,
   "start_elevation_m": 872.2657603114005,
   "end_elevation_m": 877.0056038003744,
   "start_xy": [
    971361.2006963379,
    6563984.819499977
   ],
   "end_xy": [
    971342.1781946978,
    6563990.950050858
   ]
  },
  "max_25m": {
   "gradient_pct": 23.77780402799044,
   "start_distance_m": 1251.0,
   "end_distance_m": 1276.0,
   "midpoint_distance_m": 1263.5,
   "start_elevation_m": 871.0611527933768,
   "end_elevation_m": 877.0056038003744,
   "start_xy": [
    971365.8253620383,
    6563982.918850858
   ],
   "end_xy": [
    971342.1781946978,
    6563990.950050858
   ]
  },
  "max_50m": {
   "gradient_pct": 21.55218106743837,
   "start_distance_m": 1226.0,
   "end_distance_m": 1276.0,
   "midpoint_distance_m": 1251.0,
   "start_elevation_m": 866.2295132666552,
   "end_elevation_m": 877.0056038003744,
   "start_xy": [
    971388.6085267978,
    6563972.67958894
   ],
   "end_xy": [
    971342.1781946978,
    6563990.950050858
   ]
  },
  "max_100m": {
   "gradient_pct": 19.638620290786548,
   "start_distance_m": 1214.0,
   "end_distance_m": 1314.0,
   "midpoint_distance_m": 1264.0,
   "start_elevation_m": 864.2020585740133,
   "end_elevation_m": 883.8406788647999,
   "start_xy": [
    971396.8860431652,
    6563964.060095228
   ],
   "end_xy": [
    971306.7533882934,
    6564004.436548928
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -4.702267945153835,
   "start_distance_m": 1438.0,
   "end_distance_m": 1443.0,
   "midpoint_distance_m": 1440.5,
   "start_elevation_m": 897.4812846904631,
   "end_elevation_m": 897.2461712932054,
   "start_xy": [
    971193.0529024467,
    6564053.436762925
   ],
   "end_xy": [
    971189.1376488676,
    6564056.536993184
   ]
  },
  "min_10m": {
   "gradient_pct": -2.5872119871860377,
   "start_distance_m": 1438.0,
   "end_distance_m": 1448.0,
   "midpoint_distance_m": 1443.0,
   "start_elevation_m": 897.4812846904631,
   "end_elevation_m": 897.2225634917445,
   "start_xy": [
    971193.0529024467,
    6564053.436762925
   ],
   "end_xy": [
    971185.3838817254,
    6564059.83990587
   ]
  },
  "min_20m": {
   "gradient_pct": -0.45899072242605143,
   "start_distance_m": 1437.0,
   "end_distance_m": 1457.0,
   "midpoint_distance_m": 1447.0,
   "start_elevation_m": 897.4706129369556,
   "end_elevation_m": 897.3788147924704,
   "start_xy": [
    971193.9400687263,
    6564052.98355265
   ],
   "end_xy": [
    971178.27832061,
    6564065.329524624
   ]
  },
  "min_25m": {
   "gradient_pct": 0.08933745444983288,
   "start_distance_m": 1435.0,
   "end_distance_m": 1460.0,
   "midpoint_distance_m": 1447.5,
   "start_elevation_m": 897.4195208364439,
   "end_elevation_m": 897.4418552000564,
   "start_xy": [
    971195.7641937817,
    6564052.16345035
   ],
   "end_xy": [
    971175.7772636978,
    6564066.986242561
   ]
  },
  "min_50m": {
   "gradient_pct": 1.9787136652353183,
   "start_distance_m": 1420.0,
   "end_distance_m": 1470.0,
   "midpoint_distance_m": 1445.0,
   "start_elevation_m": 897.0286850172345,
   "end_elevation_m": 898.0180418498521,
   "start_xy": [
    971209.4911681912,
    6564046.126837581
   ],
   "end_xy": [
    971167.1165197014,
    6564071.98175269
   ]
  },
  "min_100m": {
   "gradient_pct": 6.675254957738616,
   "start_distance_m": 1406.0,
   "end_distance_m": 1506.0,
   "midpoint_distance_m": 1456.0,
   "start_elevation_m": 895.0004356101606,
   "end_elevation_m": 901.6756905678992,
   "start_xy": [
    971222.670218206,
    6564041.40321178
   ],
   "end_xy": [
    971137.8790144806,
    6564092.80782021
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 30.64423953185269,
   "start_distance_m": 1274.0,
   "end_distance_m": 1276.0,
   "midpoint_distance_m": 1275.0,
   "start_elevation_m": 876.3927190097373,
   "end_elevation_m": 877.0056038003744,
   "start_xy": [
    971344.0924743497,
    6563990.370798396
   ],
   "end_xy": [
    971342.1781946978,
    6563990.950050858
   ]
  },
  "max_3m": {
   "gradient_pct": 27.431424930595465,
   "start_distance_m": 1273.0,
   "end_distance_m": 1276.0,
   "midpoint_distance_m": 1274.5,
   "start_elevation_m": 876.1826610524565,
   "end_elevation_m": 877.0056038003744,
   "start_xy": [
    971345.0496141757,
    6563990.081172165
   ],
   "end_xy": [
    971342.1781946978,
    6563990.950050858
   ]
  }
 },
 "diagnostic_note": "Windows <=3 m are at raster-noise scale (1-sigma raster noise alone is roughly +/-7 pp at 2 m and +/-5 pp at 3 m on a 1 m DTM). Diagnostic use only: never a headline or ranking value.",
 "quality_summary": {
  "no_bench_suppression": {
   "masked_fraction": 0.021,
   "windows_resited": [],
   "windows_unresolved": []
  },
  "texture_suppression": {
   "masked_fraction": 0.027,
   "windows_resited": [
    2.0,
    3.0,
    5.0
   ],
   "windows_unresolved": []
  },
  "texture_windows": {
   "rounds": 1,
   "windows_masked": [
    {
     "window_m": 5.0,
     "start_m": 354.0,
     "end_m": 359.0,
     "raw_pct": 29.69,
     "reason": "short-step"
    }
   ],
   "advisory": [],
   "unresolved": []
  },
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.527,
   "obstruction_max_height_m": 26.92,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "excluded_ranges_m": [
   [
    352.0,
    361.0
   ],
   [
    1380.0,
    1410.0
   ]
  ],
  "review": [],
  "extent": [
   "may_start_earlier",
   "may_continue_beyond_end"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "sample_interval_m": 1.0,
  "interpolation": "bilinear",
  "smoothing": "none",
  "gradient_windows_m": [
   5.0,
   10.0,
   20.0,
   25.0,
   50.0,
   100.0
  ],
  "diagnostic_windows_m": [
   2.0,
   3.0
  ],
  "elevation_crs": "EPSG:2154",
  "elevation_resolution_m": 0.5,
  "elevation_tiles": [
   "data/cache/fr/ign-lidarhd_dtm_E971-N6563_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E971-N6564_0m5.tif",
   "data/cache/fr/ign-lidarhd_dtm_E972-N6563_0m5.tif"
  ],
  "calculated_at": "2026-09-17T02:20:33+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-alps4.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-alps4",
  "elevation_provider": "IGN LiDAR HD MNT 0.5 m",
  "elevation_licence": "Licence Ouverte / Open Licence 2.0 (Etalab) \u2014 \u00a9 IGN, LiDAR HD (MNT/MNS), data.geopf.fr; reproduction autoris\u00e9e avec mention de la source et de la date",
  "elevation_dataset": "LiDAR HD \u2014 MNT (sol) et MNS (surface), 0,50 m (Institut national de l'information g\u00e9ographique et foresti\u00e8re), RGF93 / Lambert-93 EPSG:2154, altitudes IGN69",
  "elevation_vertical_datum": "IGN69",
  "elevation_tile_ids": [
   "E971-N6563",
   "E971-N6564",
   "E972-N6563"
  ],
  "elevation_blocks": [
   "21LHD5QK2@2025-06-13"
  ],
  "ign_dalles": [
   "LHD_FXX_0971_6564_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0971_6565_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0972_6564_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD5QK2"
  ],
  "ign_editions": [
   "2025-06-13"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0971_6564_MNT_O_0M50_LAMB93_IGN69": "2025-06-13",
   "LHD_FXX_0971_6565_MNT_O_0M50_LAMB93_IGN69": "2025-06-13",
   "LHD_FXX_0972_6564_MNT_O_0M50_LAMB93_IGN69": "2025-06-13"
  },
  "climb_origin": "discovered",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "carriageway": {
   "stations": 67,
   "stations_resolved": 67,
   "width_median_m": 3.5,
   "width_p10_m": 2.65,
   "width_min_m": 1.25,
   "width_max_m": 12.0,
   "bounded_share": 0.537,
   "unbounded_share": 0.463,
   "confidence_median": 0.581,
   "width_median_bounded_m": 3.5,
   "window_m": [
    1251.0,
    1276.0
   ],
   "width_at_max25_m": 3.5,
   "window_stations": 7,
   "single_track": false,
   "single_track_rule": "PROVISIONAL (2026-09-15): width_p10_m <= 3.0 m with bounded_share >= 0.6; recorded, not a rule",
   "status": "ok",
   "source": "dtm",
   "station_m": 25.0,
   "window_station_m": 5.0,
   "halfwidth_m": 6.0,
   "step_m": 0.25,
   "level_tol_m": 0.12,
   "break_min_m": 0.3,
   "stations_failed": 0,
   "hedge_to_hedge": {
    "stations": 67,
    "stations_resolved": 67,
    "width_median_m": 3.0,
    "width_p10_m": 1.0,
    "width_min_m": 0.5,
    "width_max_m": 12.0,
    "bounded_share": 0.925,
    "unbounded_share": 0.075,
    "confidence_median": 1.0,
    "width_median_bounded_m": 2.75,
    "window_m": [
     1251.0,
     1276.0
    ],
    "width_at_max25_m": 3.0,
    "window_stations": 7,
    "status": "ok",
    "source": "dsm",
    "station_m": 25.0,
    "window_station_m": 5.0,
    "halfwidth_m": 6.0,
    "step_m": 0.25,
    "level_tol_m": 0.5,
    "break_min_m": 0.3,
    "stations_failed": 0
   }
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Mieussy",
  "county": "Haute-Savoie",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}